2. Block diagram
Figure 9-18 shows a block diagram of the asynchronous event counter.
IRREC
ECCSR
OVH
ECH
CK
AEVH
OVL
ECL
CK
AEVL
Notation:
ECCSR : Event counter control/status register
ECH
ECL
: Event counter H
: Event counter L
AEVH : Asynchronous event input H
AEVL
: Asynchronous event input L
IRREC : Event counter overflow interrupt request flag
Figure 9-18 Block Diagram of Asynchronous Event Counter
3. Pin configuration
Table 9-19 shows the asynchronous event counter pin configuration.
Table 9-19 Pin Configuration
Name
Abbrev. I/O
Function
Asynchronous event input H
Asynchronous event input L
AEVH
AEVL
Input
Input
Event input pin for input to event counter H
Event input pin for input to event counter L
241
ETC [ ETC ]
